Porous roads and mobile swamps could save Chesapeake Bay

Researchers are developing a range of high-tech fixes to help restore Chesapeake Bay. Porous asphalt mixes could reduce toxic runoff from roadways, while wetland plants mounted on floating mats could be used to suck sewage and fertilizer waste directly out of the bay's tainted waters. Experts say the technologies could one day be rolled out to other troubled waterways. "What we figure out, here in Maryland, that works in the Chesapeake will, in fact, be exported around the world, guaranteed," says one Environmental Protection Agency official.